方法有三种：
1 使用source
2 使用 .
3 使用sh
简单实验：
first.sh
#!/bin/bash
echo 'your are in first file'
second.sh
#!/bin/bash
echo 'your are in second file'
source first.sh // . first.sh // sh first.sh
执行结果：
your are in second file
your are in first file
现在讨论关于参数传递：
first.sh
#!/bin/bash
echo 'your are in first file'
echo "${0} ${1}"
second.sh
#!/bin/bash
echo 'your are in second file'
echo "${0} ${1}"
. first.sh ${2} //source first.sh
执行：./second.sh abc 123
your are in second file
./second.sh abc
your are in first file
./second.sh 123
改变second.sh
second.sh
#!/bin/bash
echo 'your are in second file'
echo "${0} ${1}"
sh first.sh ${2}
执行：
./second.sh abc 123
结果：
your are in second file
./second.sh abc
your are in first file
first.sh 123
所以在调用的那个脚本需要传递参数的时候还是要注意选对方法的